Use arrow keys to move the turtle. Traceback (most recent call last): File "/opt/ros/kinetic/lib/turtletf/turtletfbroadcaster.py", line 37, in import tf File "/opt/ros/kinetic/lib/python2.7/dist-packages/tf/init.py", line 28, in from _tf import * ModuleNotFoundError: No module named 'tf' Traceback (most recent call last): File "/opt/ros/kinetic/lib/turtletf/turtletfbroadcaster.py", line 37, in import tf File "/opt/ros/kinetic/lib/python2.7/dist-packages/tf/init.py", line 28, in from _tf import * ModuleNotFoundError: No module named 'tf' Traceback (most recent call last): File "/opt/ros/kinetic/lib/turtletf/turtletflistener.py", line 37, in import tf File "/opt/ros/kinetic/lib/python2.7/dist-packages/tf/init.py", line 28, in from _tf import * ModuleNotFoundError: No module named 'tf' [turtle2tfbroadcaster-5] process has died [pid 9506, exit code 1, cmd /opt/ros/kinetic/lib/turtletf/turtletfbroadcaster.py _name:=turtle2tfbroadcaster __log:=/home/xuyuewei/.ros/log/83b26364-5c03-11e7-925b- .......